Triangle Basics
Pythagorean Theorem
Special Right Triangles
45-45-90 Triangles
30-60-90 Triangles
100
What is an equilateral triangle?
A triangle with three sides of equal measure
100
What is the only type of triangle that the Pythagorean theorem applies to?
a right triangle
100
Which special right triangle is formed by drawing the diagonal of a square?
a 45-45-90 triangle
100
Find the length of the side AB of the triangle below.
side AB is 3
100
Find the missing side length.
√3
200
What is the sum of the angle measures of a triangle
180 degrees
200
Where is the hypotenuse on a right triangle?
Across from the right angle
200
The ratio between the sides of any 30, 60, 90 is ____: _____: _____.
a. 1:square root 3: 2
b. 2: square root 3 : 2
c. 1: square root 3 : 5
d. 1 : 1 : square root 2
a. 1: square root 3 : 2
200
Find the hypotenuse of the triangle below.
8√2
200
Find the length of the side IR.
IR is 7
300
What is the sum of the of the two non-right angles in a right triangle?
90 degrees
300
In the Pythagorean theorem, what letter is used to represent the hypotenuse?
the letter C
300
What is the classification for the 45-45-90 triangle? (based on sides and angles)
an isosceles right triangle
300
Find the length of the diagonal.
8√2
300
Find the hypotenuse.
x= 12?
400
What do you call a triangle with two equal sides?
isosceles triangle
400
What operation is used to find C when you know C²?
the square root
400
Which angle is opposite the short side of a 30-60-90 triangle?
the 30 degree angle
400
Find the hypotenuse of this triangle.
Hypotenuse is 9
400
In a 30, 60, 90 degree triangle the hypotenuse is two times which leg?
Short leg
500
What is an exterior angle equal to?
Two remote interior angles
500
What completes the Pythagorean triple if a = 3 and b = 4?
c = 5
500
In which special right triangle is the hypotenuse 2 times as long as the short side?
a 30-60-90 triangle
500
Find the value of x.
x is 8√2
500
Find x.
x= 4√3